\begin{abstract} 

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In today's world, information technology plays a important role in people's
lives. Companies rely heavily on computer systems for storing and processing 
significant data. All of these technologies must be safe and trustworthy.
In this sector, which provide essential links between technologies, are
particularly important. One of the advantages of networks is the availability of
information at any given time and place. However, to maintain information
security and protect the privacy of people's data, a proper security system is
required. Therefore, this thesis focuses on implementing one technique used to
protect data transport in network systems - Virtual Private Networks (VPN).
The first section provides a brief overview of VPNs, selected security risks and
hosting platforms. The implementation chapter then describes the configuration
of the Vyatta Software - a virtual router, virtual firewall and VPN solution -
on a Cloud Platform system. The final section briefly summarizes the outcome,
describes open problems and suggests possible solutions.

(Hausegger/Zechner)


\end{abstract}